scholarly journals A Non-Uniform Transmission Line Model of the ±1100 kV UHV Tower

Energies ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 445 ◽  
Author(s):  
Xianshan Guo ◽  
Ying Fu ◽  
Jingqiu Yu ◽  
Zheng Xu
Keyword(s):  
Transmission Line ◽  
Transmission Lines ◽  
Transmission Line Model ◽  
Voltage Level ◽  
Line Model ◽  
Lightning Strikes ◽  
Impedance Model ◽  
Electromagnetic Transient ◽  
Structure Changes ◽  
The Impact

The modeling of the Ultra-High Voltage (UHV) tower plays an important role in lightning protection analysis of transmission lines because the model used will directly affect the reliability of the results. Moreover, the higher the voltage level is, the more prominent the impact becomes. This paper first analyzes the inapplicability of the Hara multi-segment multi-surge impedance model for the ±1100 kV UHV towers, and then builds a non-uniform transmission line model of the tower. Secondly, the multi-segment multi-surge impedance model is used to study the influence of the tower’s spatial structure changes on its electromagnetic transient characteristics. It is concluded that the more accurately the nominal height of the tower is modeled, the more accurately its electromagnetic transient response is reflected. Finally, the lightning electromagnetic transient responses of the tower with the non-uniform transmission line model and with the multi-segment multi-surge impedance model are compared and analyzed, which shows that the non-uniform transmission line model is more in line with the actual situation under the lightning strikes.

Study on the Identification of Lightning Over-Voltage Based on ATP-EMTP

2014 ◽  
Vol 672-674 ◽  
pp. 799-802
Author(s):  
Xiao Gang Li ◽  
Li Xue Li ◽  
Yi Hui Zheng ◽  
Xin Wang ◽  
Jian You Yu ◽  
...  
Keyword(s):  
Power System ◽  
Transmission Line ◽  
Transient Process ◽  
Transmission Lines ◽  
Weak Link ◽  
Simulation Models ◽  
Transmission Line Model ◽  
Lightning Stroke ◽  
Line Model ◽  
Simulation Results

Lightning overvoltage often leads to transmission lines trip, which is the weak link of power system. In this paper, 110-kV transmission line model is studied on the basis of the EMTP software. Several simulation models are established for back flashover lightning, induced lightning, shield failure. The transient process of lightning stroke is studied. According to the contrast of simulation results of three kinds of lightning, a set of discriminant basis to distinguish lightning on transmission line is put forward.

Research of Modeling Method of Transmission Line Information Based on IEC61850

2015 ◽  
Vol 713-715 ◽  
pp. 1377-1380
Author(s):  
Xue Ming Zhai ◽  
Long An ◽  
Huan Xia
Keyword(s):  
Smart Grid ◽  
Transmission Line ◽  
Transmission Lines ◽  
Data Model ◽  
Complete Data ◽  
Modeling Method ◽  
Transmission Line Model ◽  
Line Model ◽  
Iec 61850 ◽  
Standard Information

Currently the IEC 61850 standard for the transmission line has not been established a complete data model, restricting the development of smart grid. This paper is based on the study of the IEC 61850 standard, and information on major transmission lines were analyzed in detail, in accordance with the standard information of transmission line model based on IEC 61850 was established.

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